From "Auditory-Verbal Therapy:Developing Spoken Language Through ListeningWith ChildrenWho Are Deaf" it describes what AVT is about (note the bolded words below).
Children and their parent(s) are typically seen once, and sometimes twice, a week for Auditory-Verbal therapy. Sessions usually last one hour where audition, speech, language, cognition, and communication goals are integrated into natural, playful, and age-appropriate activities. The therapist models for the parents the skill to be developed, then guides the parents as they participate actively in establishing the goal. The emphasis is on the process of listening for learning speech and language without the use of visual cues, such as lipreading or sign language. For each verbal interaction, the child is first presented with auditory information, the parent and/or child then verbally responds to what was heard, and finally the auditory cue is reinforced with a toy, picture, or action. Listening is linked with speech, and vice versa, so that listening is an active rather than a passive process.Simply put, AVT is a speech recognition training exercise for deaf and hard of hearing children who are hearing aid or cochlear implant users. ASL or any signing cannot be used in this therapy because it does not serve a purpose in AVT at all. NONE! ASL cannot serve as a tool to help train the ear during AVT anymore than voice alone can serve as a tool to help train on teaching ASL.
AVT is not about discouraging lip-reading, either. It'd be ludicrous to think it's about discouraging lip-reading because AVT is about picking up and recognizing the spoken word. People who say that AVT is about discouraging lip-reading generally do not understand the goal of AVT. It's about training the ear and the brain to recognize and understand the spoken words. It cannot get any simpler than that, folks!
So, for a person to go around and spout that AVT "bans" ASL is either practicing the art of terminological inexactitude or the person simply does not know what he or she is talking about thinking AVT is against ASL. That is hardly the case. AVT is about the emphasis on the process of listening for learning speech and language without the use of visual cues, such as lipreading or sign language. Think of AVT like a telephone exercise where speaking and listening is required. ASL would be impossible here and serves no purpose. ASL cannot be used in a telephone conversation. Right?
I hope ya'll understand what AVT is about now.